7421424442 has 8 divisors (see below), whose sum is σ = 11172325716. Its totient is φ = 3697315872.

The previous prime is 7421424433. The next prime is 7421424457. The reversal of 7421424442 is 2444241247.

It can be written as a sum of positive squares in 2 ways, for example, as 5679280321 + 1742144121 = 75361^2 + 41739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×7421424442² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7421424398 and 7421424407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6697483 + ... + 6698590.

Almost surely, 2^7421424442 is an apocalyptic number.

7421424442 is a deficient number, since it is larger than the sum of its proper divisors (3750901274).

7421424442 is a wasteful number, since it uses less digits than its factorization.

7421424442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13396352.

The product of its digits is 57344, while the sum is 34.

The square root of 7421424442 is about 86147.6897078500. The cubic root of 7421424442 is about 1950.5739657774.

Adding to 7421424442 its reverse (2444241247), we get a palindrome (9865665689).

The spelling of 7421424442 in words is "seven billion, four hundred twenty-one million, four hundred twenty-four thousand, four hundred forty-two".